63553944 has 16 divisors (see below), whose sum is σ = 158884920. Its totient is φ = 21184640.

The previous prime is 63553927. The next prime is 63553961. The reversal of 63553944 is 44935536.

It is an interprime number because it is at equal distance from previous prime (63553927) and next prime (63553961).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1324017 + ... + 1324064.

Almost surely, 2^63553944 is an apocalyptic number.

It is an amenable number.

63553944 is an abundant number, since it is smaller than the sum of its proper divisors (95330976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63553944 is a wasteful number, since it uses less digits than its factorization.

63553944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648090 (or 2648086 counting only the distinct ones).

The product of its digits is 194400, while the sum is 39.

The square root of 63553944 is about 7972.0727543093. The cubic root of 63553944 is about 399.0685493495.

The spelling of 63553944 in words is "sixty-three million, five hundred fifty-three thousand, nine hundred forty-four".